Clenching your butt gets it toned and you can do it all day long anywhere you are!

Bum toning exercises? I wish people who knew nothing about fitness would refrain from posting.

OP, the reason your bum is saggy despite the fact you're thin is going to be because the weight you are carrying is fat rather than muscle (combined with a possible genetic tendency to store fat on your bum over other places on your body). You obviously don't need to lose weight overall, but the best thing you can do is to lose a little fat and (more importantly) build some muscle on your bum and legs with resistance exercises like squats and lunges.

i am also keen to know the answer to this.
not that my butt is saggy, i just want bigger bum muscles.
i do squats already but i don't really want bigger quads as well because i'm fine with them at their current size and i find that with squats i tend to work my quads as well (or at least it feels like i'm working them more than the glutes) so are there any other exercises that are more focused solely on the butt?

(Original post by codcod)
i am also keen to know the answer to this.
not that my butt is saggy, i just want bigger bum muscles.
i do squats already but i don't really want bigger quads as well because i'm fine with them at their current size and i find that with squats i tend to work my quads as well (or at least it feels like i'm working them more than the glutes) so are there any other exercises that are more focused solely on the butt?

You can probably deadlift to even things out and work the glutes and hamstrings.

(Original post by codcod)
i am also keen to know the answer to this.
not that my butt is saggy, i just want bigger bum muscles.
i do squats already but i don't really want bigger quads as well because i'm fine with them at their current size and i find that with squats i tend to work my quads as well (or at least it feels like i'm working them more than the glutes) so are there any other exercises that are more focused solely on the butt?

How are you squating? Squatting until your ass touches the ground emphisises the glutes more than the quads, try that.

(Original post by codcod)
i am also keen to know the answer to this.
not that my butt is saggy, i just want bigger bum muscles.
i do squats already but i don't really want bigger quads as well because i'm fine with them at their current size and i find that with squats i tend to work my quads as well (or at least it feels like i'm working them more than the glutes) so are there any other exercises that are more focused solely on the butt?

Power squats baby!

They place much more emphasis on the hamstringes, adductors, glutes and lower back than the quads, see my profile squat vid for an example.